Technical Parameters Basic Information Brand: ALSTOM / Converteam Part Number: MVAXR02B1DA1004B Form Factor: Standard 3U slide-in rack pluggable module Matching System: EP3-E-4-EN / EPIC-III traction main control card, KCEG/KVFG IGBT gate drive PCBs, M5A/M57 analog sampling boards, MCAA/MCTI TCMS communication boards Application: European urban metro & light rail traction converter, centralized isolated auxiliary power supply for full rack control electronics High Voltage Input Specifications Input source: Vehicle main traction DC link Input voltage range: 400 VDC ~ 900 VDC wide fluctuation range Max rated input power: 360 W Input protection: Overvoltage, undervoltage, reverse polarity blocking, HV surge absorption circuit, built-in input overcurrent fuse Galvanically Isolated Multi Output Channels DC24V / 6.2A: RIOM remote I/O modules, control relays, temperature & current signal sensors ±15V / 3.0A: All analog signal conditioning and sampling circuits ±5V / 4.0A: DSP traction master CPU, internal rack backplane communication logic circuits Dual isolated ±18V: Dedicated isolated power supply for all IGBT gate drive monitoring boards All secondary outputs complete galvanic isolation from high-voltage primary DC-link side Independent per-channel hardware protection: Short-circuit lockout, overcurrent limitation, overtemperature auto shutdown & self-recovery Mechanical Specifications Overall dimension: H130 mm × W98 mm × D220 mm PCB protection: Full acrylic conformal coating, anti-moisture, anti-corrosion, anti-dust, anti-mold Front panel LED indicators: HV Input Ready, 24V Aux Output Normal, Gate Drive Power Fault, Overheat Alarm Fastening structure: Anti-looseness lock buckle, stable electrical contact under long-term vehicle running vibration Railway Environmental & EU EN Compliance Operating ambient temperature: -25 ℃ ~ +70 ℃ Storage & transport temperature: -40 ℃ ~ +85 ℃ Relative humidity: 5% ~ 95% non-condensing Vibration test standard: IEC 61373 railway rolling stock Shock resistance: 12g half-sine wave impact test EMC standard: EN 50121-3-2 railway vehicle electromagnetic compatibility Fire safety grade: EN 45545-2 HL2 low smoke, low toxicity flame retardant material